Identification keys and general biology are given in Richards (1980), Gauld & Bolton (1988) and Yeo & Corbet (1995). Females are wingless, but males are fully-winged.
In England from Dorset to Kent, including the Isle of Wight, and north to Oxfordshire, Bedfordshire, Cambridgeshire and Norfolk. Also the Channel Islands.
Overseas, found in many parts of mainland Europe (Norway, Sweden, Finland, Denmark, The Netherlands, France, Germany, Italy and Hungary).